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Plz help plz thanks so much this is for my sister plz help
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Dec 10, 2019
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Plz help plz thanks so much this is for my sister plz help
Mathematics
middle-school
Jayant Arora
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1. 1+1+1+1+1+1+21
2.10+10+10+10+10+10+21
good luck
Mathisonian
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Dec 13, 2019
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Mathisonian
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6 + 21 = 27 (Add six ones)
60 + 21 = 81 (Add six tens)
I hope this helps:)
I'm sorry if it doesn't:(
Slava Utesinov
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Dec 15, 2019
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Slava Utesinov
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